18127900 has 144 divisors (see below), whose sum is σ = 49996800. Its totient is φ = 5564160.

The previous prime is 18127883. The next prime is 18127909. The reversal of 18127900 is 972181.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18127909) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 385677 + ... + 385723.

It is an arithmetic number, because the mean of its divisors is an integer number (347200).

Almost surely, 2^18127900 is an apocalyptic number.

18127900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18127900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24998400).

18127900 is an abundant number, since it is smaller than the sum of its proper divisors (31868900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18127900 is a wasteful number, since it uses less digits than its factorization.

18127900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 18127900 is about 4257.6871655865. The cubic root of 18127900 is about 262.6934024452.

The spelling of 18127900 in words is "eighteen million, one hundred twenty-seven thousand, nine hundred".